Calculators

Soil for raised beds in yards, feet and bags. Free, instant, in your browser.

Solve for speed, distance or time. Free, instant, in your browser.

Sphere volume and surface area. Free, instant, in your browser.

Area in square feet, with cost. Free, instant, in your browser.

Area of a room in m² and sq ft. Free, instant, in your browser.

Square, cube and nth roots, simplified. Free, instant, in your browser.

Risers, treads and stringer length. Free, instant, in your browser.

Calculate Stamp Duty Land Tax on a residential purchase in England or Northern Ireland, for home movers, first-time buyers and additional properties, using the rates from 1 April 2025. Free, in your browser, no sign-up.

Sample and population standard deviation, with steps. Free, instant, in your browser.

Calories and distance from a step count. Free, instant, in your browser.

Steps to km and miles by height. Free, instant, in your browser.

Calculate yearly and monthly straight-line depreciation from an asset’s cost, salvage value and useful life. Free, in your browser, no sign-up.

Estimate a monthly student loan payment and the total interest over the term. Free, in your browser, no sign-up.

Network, broadcast, host range and mask for any IPv4 address and prefix.

Add up a list of numbers. Free, instant, in your browser.

Cube, box, sphere, cylinder, cone. Free, instant, in your browser.

See how a systematic withdrawal plan draws down an investment: the final value, total withdrawn, and whether the money runs out. Free, in your browser, no sign-up.

Capacity of cylinder or box tanks. Free, instant, in your browser.

Karvonen heart rate zones from resting pulse. Free, instant, in your browser.

Convert a tax-free municipal bond yield into the taxable yield you would need to earn the same after tax, including state tax. Free, in your browser, no sign-up.

Estimate your Total Daily Energy Expenditure, the calories you burn per day including activity. Free, in your browser, no sign-up.

Enter a room's area and tile size to get how many tiles and boxes you need for a floor or wall.

Solve for FV, PV, PMT, N or rate like a financial calculator. Free, instant, in your browser.

Calculate the times interest earned (interest coverage) ratio from operating income and interest expense. Free, in your browser, no sign-up.